Fix some relative paths.

The robots.txt and favicon.ico locations were specified as relative
paths, which should have been changed since the location of the start
script changed relative to everything else. Hopefully, these paths are
specified correctly now and shouldn't need to be fixed in the future.
adding very basic permutation directory to lmfdb
Merged to upstream.
Merge branch 'master' of github.com:LMFDB/lmfdb
inserted crystal latex picture
fallback if rendering fails
new error message when latex does not work
author info
link to associated littelmann path form crystal page
Remove report of search query for Hilbert modular forms.
Merge branch 'master' of https://github.com/LMFDB/lmfdb
Added search by j-invariant for elliptic curves
fixed Littelmann knowl
Merge pull request #6 from JohnCremona/master

Added search by j-invariant for elliptic curves
added sage code to crystal page
Added "All twists" to friend list of elliptic curve home page
Merge branch 'master' of github.com:LMFDB/lmfdb into anne

* 'master' of github.com:LMFDB/lmfdb:
  Added search by j-invariant for elliptic curves
  Add motivic weight to gaga box
  add Galois orbit for Dirichlet characters
Merge branch 'master' of git://github.com/anneschilling/lmfdb into anne

* 'master' of git://github.com/anneschilling/lmfdb:
  added sage code to crystal page
  fixed Littelmann knowl
Added j-invariants to data imported from raw data files
Merge branch 'master' of git://github.com/LMFDB/lmfdb